diff --git a/src/rules/checkExamples.js b/src/rules/checkExamples.js
index fdbb7d540..5d0f79875 100644
--- a/src/rules/checkExamples.js
+++ b/src/rules/checkExamples.js
@@ -350,7 +350,7 @@ export default iterateJsdoc(({
     if (!filename) {
       const jsFileName = context.getFilename();
       if (typeof jsFileName === 'string' && jsFileName.includes('.')) {
-        defaultFileName = jsFileName.replace(/\..*?$/u, `.${ext}`);
+        defaultFileName = jsFileName.replace(/\.[^.]*$/u, `.${ext}`);
       } else {
         defaultFileName = `dummy.${ext}`;
       }